The House and Senate are drawing closer on resolving differences in this new six-year highway and mass transit bill, but are doing so under the threat of a veto from the White House should it exceed $256 billion. Current funding maintains the previous $218 billion plan which expired last September. Indications are that there is a slight easing of the White House position and it might sign a $299 billion bill. However, as Congress left for its summer break, the Senate version of the bill was at $318 billion.